Greetings and Happy New Year.

I am working on a modified '54 3100 with a Camaro stub and a 350 V8. I have scrapped out the entire exhaust except the headers. I am leaning towards dual Flowmaster 50 series Delta Flow mufflers. No cross pipe. I want a nice resonant rumble , that gurgle-y idle sound , but not excessive noise , rapping when decelerating , and certainly NO trombone. I want folks to hear an unmistakable hot rod sound without being a public nuisance.

I am pretty new to all this. Someone please chime in and tell me if I am barking up the right tree.
The mufflers will have about 4 1/2 ft. of pipe downstream from them , straight out the rear.
I think that the inlet will be 2 1/2" ; will have to double check.
Would it benefit the rumble if I were to expand to 3" aft of the mufflers?

Exhaust input welcomed on a cold winter day ,

Waveski.